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18724 (1998 JV1)
Classification: Main-belt Asteroid          SPK-ID: 2018724
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0882059275152048 3.3687e-08  
a 3.172979322132804 1.7281e-08 au
q 2.893103738037514 1.0998e-07 au
i 7.454709226803476 3.5664e-06 deg
node 121.5225271216955 3.4382e-05 deg
peri 140.7943184091527 4.2689e-05 deg
M 290.3510542038218 2.5895e-05 deg
tp 2459399.903012536887
(2021-Jul-04.40301254)
0.0001487 TDB
period 2064.425855547827
5.65
1.6866e-05
4.618e-08
d
yr
n .1743826250928583 1.4246e-09 deg/d
Q 3.452854906228094 1.8806e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2044  
   data-arc span      10744 days (29.42 yr)  
   first obs. used      1991-01-13  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48191  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:25:14  

Additional Information
 Earth MOID = 1.88215 au 
 Jupiter MOID = 1.65305 au 
 T_jup = 3.182 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9   n/a MPO384914  
diameter diameter 14.800 km 0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.130 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.055   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18724 (1998 JV1)          Discovered 1998-May-01 by JPL/GEODSS NEAT at Haleakala
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 JV1 = 1997 EN34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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